248°/248° Camshaft for a near stock 1JZ-GTE Non VVTi engine. Great for street cars. Good throttle response. Improved low to mid-range power and fast spool. Suits stock twin turbo or single 54mm-58mm turbo upgrade. Can use OEM valve spring up to stock boost and rpm limit. For up to 7500rpm and 30psi boost Kelford Cams recommend valve spring KVS109-1JZ.